Question

fill in the blank question
fentanyl is estimated to be 50 to 100 times more powerful than

Explanation:

Fentanyl is a synthetic opioid, and in terms of potency, it is commonly known to be 50 to 100 times more powerful than morphine. This is a well - established fact in the field of medicine and pharmacology, where the relative potencies of different opioids are studied.

Answer:

morphine